Engine Coolant Thermostat Housing 15-11125 12674639 For Chevy Silverado Suburban Tahoe Corvette Thermostat Housing OE Part Numbers: Engine Coolant Thermostat Housing Replacement for 15-11125, 12674639 _x000D_ _x000D_ Fitment: _x000D_ For Chevrolet: Corvette 2014, _x000D_ For Silverado 1500 2014-, _x000D_ For Silverado 2500 2014-, _x000D_ For Suburban 2015-, _x000D_ For Tahoe 2015-; _x000D_ For Sierra 1500 2014-, _x000D_ For Sierra 2014-, _x000D_ For Yukon XL 2015-, _x000D_ For Yukon Denali 2015-; _x000D_ For Cadillac Escalade 2015- _x000D_ _x000D_ Replacement Coolant Thermostat Housing With Sensor: Regulates the flow of the coolant going through the radiator to keep the engine in its stable operating temperature preventing it from over heating. _x000D_ _x000D_ Built-in quality material: It is a direct replacement and will fit and function exactly like the factory part. _x000D_ _x000D_ Replace Thermostat Housing Assembly: Adjust the coolant flow through the radiator to maintain the engine at its stable operating temperature and prevent overheating. Appropriate temperature control can improve fuel efficiency, so as to help owners save fuel costs_x000D_ _x000D_ _x000D_ _x000D_